The First Week Pitfall Nobody Sees Coming

The email arrives on a Tuesday morning.

It appears to come from the CEO. The name is correct, the writing style fits, and even the signature looks convincing.

“Hey, can you handle something for me quickly? I’m in back-to-back meetings. Need you to process a vendor payment. I'll explain later.”

The new employee hesitates.

They have only been with the company for four days. Everything is still unfamiliar. They are not sure what is standard practice yet, and they certainly do not want to be the person who challenges the CEO during their first week.

So they proceed with the request.

And at that moment, the damage is already done.

Why the First Week Is the Most Vulnerable Period

Every spring, businesses onboard a fresh group of employees, often recent graduates and summer interns stepping into their first professional roles. For companies, this is onboarding season. For attackers, it is something very different.

According to Keepnet Lab’s 2025 New Hires Phishing Susceptibility Report, emails impersonating a CEO are 45% more likely to succeed with new hires compared to experienced staff.

Attackers rarely target your most experienced employees. Instead, they focus on those still learning the environment because the early stage creates a window where everything is new and unfamiliar.

A new hire does not yet know what a normal request looks like. They are not familiar with how leadership typically communicates. They have not yet developed the instincts or confidence that come with time, and cybercriminals rely on that gap.

But the important point is this: the new employee is not the real issue. The highest risk is not the person who is careless. It's the one who is trying to be helpful.

If you run a business, you likely already know which person on your team would respond first.

The Real Issue Is Not a Lack of Training. It’s How the System Is Set Up.

Think back to that employee’s first day.

Their laptop wasn’t fully configured. System access was incomplete. Their email account was still in progress. They quickly used a coworker’s credentials to get something done. They stored a file on their own machine because shared access was not available. They grabbed a client detail from their personal phone because it was faster.

Nothing about that felt unsafe. It felt like solving problems. It felt like doing what was needed to keep things moving.

But during that first week, before everything is properly structured, several risks begin to take shape behind the scenes. Logins get shared without oversight, important files sit outside protected systems, personal devices connect to company data, and there is no clear direction on what to do when something feels suspicious.

The same Keepnet report shows that new hires are 44% more likely to fall for phishing attempts compared to experienced staff. That difference is not about negligence. It comes from a lack of structure. When onboarding is messy, security becomes an afterthought, and that is exactly the situation attackers rely on.

The vulnerability was not created by the attack. It was already there from the very beginning.

What a Strong First Day Setup Looks Like

This doesn't require a lengthy security briefing on day one. It comes down to having three essentials ready before the employee even starts.

1. Their access is prepared ahead of time, not figured out as they go. The laptop is set up, credentials are in place, and permissions are clearly assigned. There is no sharing of logins, no quick fixes, and no delays pushed to later in the week.
2. They understand what a typical request looks like in your business. This can be covered in a short 10-minute chat. Would the CEO ever ask for a payment by email? Would anyone else? What should they do if something feels suspicious? This is not formal training, it is simple direction.
3. They know exactly where to go with questions without feeling uncomfortable. The employee who paused before acting on that email likely would have checked with someone if they knew who to approach. Many first week mistakes happen quietly because new hires do not want to seem inexperienced.

Assign them a point of contact. Give them a defined way to handle situations.

Most security problems aren't caused by people ignoring rules. They happen when those rules have not been clearly explained yet.

Your onboarding might already be in good shape. Your team might be small enough that day one feels more personal than structured. But if you have ever watched a new hire navigate their first week without clear direction, or if you are planning to hire this spring, it is worth addressing before that Tuesday email comes through.

Give us a call at 704.470.9009 or schedule a quick discovery call.

And if you know another business owner preparing to hire, pass this along. The best time to lock that door is before anyone has the chance to walk through it.